May weather forecast
Three Forks, MT

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Weather in May

The last month of the spring, May, is a comfortable month in Three Forks, Montana, with an average temperature ranging between max 62.6°F (17°C) and min 37.9°F (3.3°C).

Temperature

Three Forks experiences a temperature shift with the start of May, with average high-temperatures moving from a cool 50.4°F (10.2°C) in April to an enjoyable 62.6°F (17°C). With a significant temperature contrast, nighttime temperatures hover around an average low of 37.9°F (3.3°C) in May.

Humidity

In Three Forks, the average relative humidity in May is 60%.

Rainfall

In Three Forks, Montana, in May, it is raining for 15.9 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, in Three Forks, there are 134.2 rainfall days, and 11.34" (288mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. In Three Forks, in May, snow falls for 1.3 days, with typically accumulated 0.83" (21mm) of snow. In Three Forks, Montana, during the entire year, snow falls for 79.6 days and aggregates up to 30.08" (764mm) of snow.

Daylight

The average length of the day in May in Three Forks is 14h and 58min.
On the first day of May in Three Forks, Montana, sunrise is at 6:11 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 9:08 pm MDT.

Sunshine

In May, the average sunshine is 10.7h.

UV index

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: During May, 4 as the daily maximum UV index converts into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the temperature in May in Three Forks?

The average high-temperature and low-temperature in Three Forks, Montana, during May are 62.6°F (17°C) and 37.9°F (3.3°C) respectively.

What is the average humidity in May in Three Forks?

The average relative humidity in May in Three Forks is 60%.

How many days does it rain in May in Three Forks?

In Three Forks, during May, the rain falls for 15.9 days and regularly aggregates up to 1.42" (36mm) of precipitation.

How much does it snow in Three Forks in May?

In May, in Three Forks, it is snowing for 1.3 days. Throughout May, 0.83" (21mm) of snow is accumulated.

How many hours of daylight does Three Forks have in May?

In May, the average day length in Three Forks, Montana, is 14h and 58min.

When are sunrise and sunset in May in Three Forks?

In May, on the first day of the month, sunrise is at 6:11 am and sunset at 8:34 pm. On the last day of the month, in Three Forks, Montana, sunrise is at 5:39 am and sunset at 9:08 pm MDT.

How many hours of sunshine does Three Forks have in May?

The average sunshine duration in May in Three Forks is 10.7h.

How high is the UV index in May in Three Forks?

The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Three Forks, MT

Average temperature in May - Three Forks, MT
  • Average high temperature in May: 62.6°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28°F).

  • Average low temperature in May: 37.9°F

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (12.7°F).

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Average pressure in May
Three Forks, MT

Average pressure in May - Three Forks, MT
  • Average pressure in May: 29.94"Hg

The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in May
Three Forks, MT

Average wind speed in May - Three Forks, MT
  • Average wind speed in May: 5mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in May
Three Forks, MT

Average humidity in May - Three Forks, MT
  • Average humidity in May: 60%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (44%).

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Average rainfall in May
Three Forks, MT

Average rainfall in May - Three Forks, MT
  • Average rainfall in May: 1.42"

The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is August (0.51").

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Average rainfall days in May
Three Forks, MT

Average rainfall days in May - Three Forks, MT
  • Average rainfall days in May: 15.9 days

The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).

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Average snowfall in May
Three Forks, MT

Average snowfall in May - Three Forks, MT
  • Average snowfall in May: 0.83"

The month with the highest snowfall is February (6.02").
The months with the least snowfall are July and August (0").

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Average snowfall days in May
Three Forks, MT

Average snowfall days in May - Three Forks, MT
  • Average snowfall days in May: 1.3 days

The month with the highest number of snowfall days is February (16.5 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in May /
Average sunshine in May
Three Forks, MT

Average daylight in May / Average sunshine in May - Three Forks, MT
  • Average daylight in May: 15h and 0min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

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Average sunshine days in May
Three Forks, MT

Average sunshine days in May - Three Forks, MT
  • Average sunshine days in May: 10.5 days

The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is April (9.3 days).

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Average UV index in May
Three Forks, MT

Average UV index in May - Three Forks, MT
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Three Forks, MT

Average cloud cover in May - Three Forks, MT
  • Average cloud cover in May: 30

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in May
Three Forks, MT

Average visibility in May - Three Forks, MT
  • Average visibility in May: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Three Forks, Montana, USA

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